var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

// 导入express-session和connect-mongo
const session = require('express-session')
const MongoStore = require('connect-mongo')
// 导入配置项
const {DBHOST,DBPORT,DBNAME} = require('./config/config')

var indexRouter = require('./routes/web/index');
// 导入account接口文件
const accountRouter = require('./routes/api/account')
// 导入注册接口文件
var authRouter = require('./routes/web/auth')
// api校验
const authApiRouter = require('./routes/api/auth')

var app = express();
// 设置session中间件
app.use(session({
  name: "sid",//设置cookie的name，默认值是：connect.sid
  secret: 'atguigu',//参与加密的字符串(又称签名)
  saveUninitialized: false,//是否为每次请求都设置一个cookie用来存储session的id
  resave: true,//是否在每次请求时重新保存session
  store: MongoStore.create({
      mongoUrl: `mongodb://${DBHOST}:${DBPORT}/${DBNAME}`//数据库的连接配置
  }),
  cookie: {
      httpOnly: true,//开启后前端无法通过js操作
      maxAge: 1000 * 60 * 60 * 24 * 7///这一条是控制sessionID的过期时间
  }
}))


// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/api', accountRouter)
app.use('/', authRouter)
app.use('/api', authApiRouter)


// catch 404 and forward to error handler
app.use(function (req, res, next) {
  // 响应404
  res.render('404')
  // next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
